Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 29 Jul 2016, 01:34

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# If d denotes a decimal, is d>=0.5 ?

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 34107
Followers: 6104

Kudos [?]: 76806 [1] , given: 9992

If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

15 Oct 2012, 04:49
1
KUDOS
Expert's post
8
This post was
BOOKMARKED
00:00

Difficulty:

15% (low)

Question Stats:

72% (01:47) correct 28% (00:57) wrong based on 657 sessions

### HideShow timer Statistics

If d denotes a decimal, is $$d\geq{0.5}$$ ?

(1) When d is rounded to the nearest tenth, the result is 0.5.
(2) When d is rounded to the nearest integer, the result is 1.

Practice Questions
Question: 63
Page: 280
Difficulty: 600
[Reveal] Spoiler: OA

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 34107
Followers: 6104

Kudos [?]: 76806 [1] , given: 9992

Re: If d denotes a decimal, is d>= ? [#permalink]

### Show Tags

15 Oct 2012, 04:49
1
KUDOS
Expert's post
2
This post was
BOOKMARKED
SOLUTION

If d denotes a decimal, is $$d\geq{0.5}$$ ?

(1) When d is rounded to the nearest tenth, the result is 0.5. This statement implies that $$0.45\leq{d}<0.55$$. Not sufficient.

(2) When d is rounded to the nearest integer, the result is 1. d cannot be less than 0.5 because in this case 1 won't be the nearest integer. Sufficient.

_________________
Director
Joined: 24 Aug 2009
Posts: 504
Schools: Harvard, Columbia, Stern, Booth, LSB,
Followers: 12

Kudos [?]: 611 [2] , given: 241

Re: If d denotes a decimal, is d>= ? [#permalink]

### Show Tags

15 Oct 2012, 05:24
2
KUDOS
1) d can be any number between 0.45 to .54 --- >Insufficient
2) d can be any number greater than or equal to 0.5-->Sufficient
_________________

If you like my Question/Explanation or the contribution, Kindly appreciate by pressing KUDOS.
Kudos always maximizes GMATCLUB worth
-Game Theory

If you have any question regarding my post, kindly pm me or else I won't be able to reply

Moderator
Joined: 01 Sep 2010
Posts: 2992
Followers: 691

Kudos [?]: 5571 [1] , given: 968

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

16 Oct 2012, 02:38
1
KUDOS
These one are always tricky for me

We have to know id d is < = or >= 0,5

1) if the number is 0,45 to 0,54 we have the decimal that cuold be 4 or 5 (0,4 or 0,5)

2) if the numbe must be 1 the number ranging from 0,5 to 0,9 but always the decimal will be >= 0,5

B is the answer
_________________
Manager
Joined: 21 Sep 2012
Posts: 237
Followers: 1

Kudos [?]: 285 [2] , given: 63

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

16 Oct 2012, 06:14
2
KUDOS
so statement 1 (1) When d is rounded to the nearest tenth, the result is 0.5.

so if we pick d=0.48 then in this case the answer to is d>=0.5 is NO

but if we pick d=0.53 then in this case it is YES

2 situations YES / NO ambiguity hence insufficient

When d is rounded to the nearest integer, the result is 1.

so for example if d=0.2 then the decimal would be rounded to nearest integer which is 0

but we have been given that it is rounded to 1 so the range is 0.5 to 1.4 in all of those cases it is rounded to 1 hence B is sufficient

Last edited by nelz007 on 16 Oct 2012, 20:03, edited 1 time in total.
Director
Status: Done with formalities.. and back..
Joined: 15 Sep 2012
Posts: 647
Location: India
Concentration: Strategy, General Management
Schools: Olin - Wash U - Class of 2015
WE: Information Technology (Computer Software)
Followers: 43

Kudos [?]: 497 [1] , given: 23

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

16 Oct 2012, 06:25
1
KUDOS
Statement 1:
round(d,0.1) = 0.5
=>
0.45<=d<=0.54
Not suff as d can have values less than 0.5 as well as greater than 0.5

Statement 2:
round(d,1) =1
=>
0.5 <=d<=1.49
for any value of d here, it is sufficient to answer.

Ans B
Bunuel wrote:
The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

If d denotes a decimal, is $$d\geq{0.5}$$ ?

(1) When d is rounded to the nearest tenth, the result is 0.5.
(2) When d is rounded to the nearest integer, the result is 1.

Practice Questions
Question: 63
Page: 280
Difficulty: 600

GMAT Club is introducing a new project: The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide for GMAT® Review, 13th Edition and then after couple of days we'll provide Official Answer (OA) to them along with a solution.

We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!

_________________

Lets Kudos!!!
Black Friday Debrief

Senior Manager
Joined: 06 Aug 2011
Posts: 405
Followers: 2

Kudos [?]: 163 [1] , given: 82

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

16 Oct 2012, 12:16
1
KUDOS
Its B.. was confused .49 wud be included in option or not...then i thought no..because .51 to1.49 wud b nearest integer 1..
_________________

Bole So Nehal.. Sat Siri Akal.. Waheguru ji help me to get 700+ score !

Math Expert
Joined: 02 Sep 2009
Posts: 34107
Followers: 6104

Kudos [?]: 76806 [0], given: 9992

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

19 Oct 2012, 05:30
Expert's post
SOLUTION

If d denotes a decimal, is $$d\geq{0.5}$$ ?

(1) When d is rounded to the nearest tenth, the result is 0.5. This statement implies that $$0.45\leq{d}<0.55$$. Not sufficient.

(2) When d is rounded to the nearest integer, the result is 1. d cannot be less than 0.5 because in this case 1 won't be the nearest integer. Sufficient.

Kudos points given to everyone with correct solution. Let me know if I missed someone.
_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 10646
Followers: 496

Kudos [?]: 131 [0], given: 0

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

15 Jul 2014, 04:27
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 10646
Followers: 496

Kudos [?]: 131 [0], given: 0

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

30 Apr 2016, 03:15
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Manager
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 189
Location: United States (CA)
Followers: 5

Kudos [?]: 29 [0], given: 0

Re: If d denotes a decimal, is d>=0.5 ? [#permalink]

### Show Tags

14 May 2016, 07:50
Bunuel wrote:
If d denotes a decimal, is $$d\geq{0.5}$$ ?

(1) When d is rounded to the nearest tenth, the result is 0.5.
(2) When d is rounded to the nearest integer, the result is 1.

Solution:

We are given that d is a decimal, and we need to determine whether d is greater than or equal to 0.5.

Statement One Alone:

When d is rounded to the nearest tenth, the result is 0.5.

Using the information in statement one, we can get a multitude of values for d.

For example, d can be 0.51, and 0.51 is greater than or equal to 0.5.

In another case, d can be 0.49, but 0.49 is not greater than or equal to 0.5.

Statement one is not sufficient to answer the question. We can eliminate answer choices A and D.

Statement Two Alone:

When d is rounded to the nearest integer, the result is 1.

In order for d to be rounded to 1 (when rounded to the nearest integer), the value of d must be at least 0.5. Statement two is sufficient to answer the question.

The answer is B.
_________________

Jeffrey Miller
Scott Woodbury-Stewart
Founder and CEO

Re: If d denotes a decimal, is d>=0.5 ?   [#permalink] 14 May 2016, 07:50
Similar topics Replies Last post
Similar
Topics:
What digit does d represent in the decimal 0.d64? 2 01 Nov 2015, 09:17
2 In the terminating decimal equivalent of d, what is the number of nonz 4 16 Dec 2014, 06:00
1 If the fraction d were converted into a decimal, would there 4 10 Dec 2012, 06:07
11 If for any positive integer x, d[x] denotes its smallest odd 9 01 Nov 2010, 08:58
32 Is the hundredths digit of the decimal d greater than 5? 17 05 Oct 2010, 07:58
Display posts from previous: Sort by

# If d denotes a decimal, is d>=0.5 ?

 new topic post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.